Ladder



No. 6|I,204. Patented Sept. 20, I898.

v H. W. KRYDER.

L A D D E R (Applibation filed Sept. 8, 1897.)

(No Model.)

cams PEYEHS co.. woraumo" msumu'rom n. c.

rrnn STATES HENRY W. KRYDER, OF OLIN'IONDALE, PENNSYLVANIA.

LADDER.

SPECIFICATION forming part of Letters Patent No. 611,204, dated September '20, 1898.

Application filed September 8, 1897. Serial No. 650,965. (No model.)

To aZZ whmn it may concern.-

Be it known that I, HENRY W. KRYDER, of Glintondale, in the county of Clinton, State of Pennsylvania, have invented certain new and useful Improvements in Ladders, of which the following is a complete specification, reference being had to the accompanying drawings. The object of my invention is to produce a simple, convenient, and stable form of economical ladder, which, being mounted on wheels, can be trundled from place to placefor example, from tree to tree in an orchardwith the weight of a man upon it and which, in its preferable form of embodiment, can be, when out of use, folded together, so as to 00- cupy small storage-space.

In the accompanying drawings, Figure I is a perspective view of my ladder complete ready for use. Fig. II is a view of the same folded, with one of the wheels cut away.

Referring to the figures on the drawings, 1 indicates an axle, and 2 and 3 wheels mounted thereon in the ordinary manner.

4 indicates a ladder, which is firmly secured at one end to the axle 1 and which at the opposite end is supported by a second ladder 5, which reaches from top of the ladder 4 to the ground, upon which it rests in use. p

6 indicates braces or retaining-pieces,which are secured at one end, as indicated at 7, to or adjacent to the lower end of the ladder 4 and which terminate at the opposite ends in handles 8, secured to the ladder 5, by which the end of the ladder 5 may be lifted from the ground and both ladders trundled from place to place upon the wheels 2 and 3.

In order to secure that stability which is essential in a ladder of this class and to prevent it from toppling laterally, I provide cross-braces 9 and 10, extending, respectively, from points near the ends of the axle 1 to the opposite sides of the upper extremity of the ladder 4. It being likewise necessary, in order to insure the stability of the ladder, to provide against the movement of the wheels 2 and 3 with respect to the ladder 4 I provide a tongue 11, which is connected-totheaxle, as by means of ordinary hounds 12, and is secured at its opposite end to the ladder 5.

In the foregoing description no reference is made to the means adopted'for folding the ladder, as shown in Fig. II. All of the parts 7 provision for folding.

may, if preferred, be united rigidly without I prefer, however, to provide means for folding. Such means consists in constituting the means of union between the ladder 4 and the braces 6, as indicated at 7, into a pivot; in providing a pivotal connection at 13 between the braces 6 and the ladder 5; in providing hooks 14, fastened upon the topmost rung 15 of the ladder 4, by which the upper ends of the ladders 4 and 5 may be separably united; in uniting the hounds 12 to the axle by hinged connections 16, and in employing a hook 18 or other suitable connection for-fastening the tongue 11 to the end of the ladder 5. In this form of embodiment of my invention the cross-braces 9 and the ladder 4 are firmly united, as previously specified, to the axle 1, the crossbraces resting against spacing-blocks 19, if desired. I also provide a step or supportingledge 20uponthe axle for the support of the ladder 5 when the parts are folded.

In operation the hooks 14 are separated from the rung 15 and the heads of the respective ladders are allowed to descend in opposite directions, the hook 18 being detached from the ladder 5 for that purpose. As the ladders descend the axle 1 begins to make a quarter of a revolution, until when the ladders are brought into the horizontal position, as shown in Fig. II, the hinged connections 16 are in the vertical positions, and the step 20 is brought to the horizontal position, so as to support the end of the ladder 5. The hook 18 may be in the folded position secured in a link or clevis 21, as shown in Fig. II.

In the'form'of embodiment of my invention above specified I enumerate a ladder 4 as one of the elements; but although it is preferred as constituting a rigid form of upright or ladgating the parts above referred to. Such means may consist in overlapping sections 22 in the tongue 11 and 23 in the braces 6 in conjunction with collars 24: upon the former and 25 upon the latter. The collar 24 is provided with a set-screw 26, Working in a slot 27 in the tongue, and the collars 25 are provided with setscrews 28, Working in slots 29 in the braces.

Vhat I claim is- 1. The combination with Wheels and an axle, of supporting-pieces secured at one end to the axle, cross-braces connecting the opposite ends of the axle, respectively, with the opposite sides of the upper end of the supporting-pieces, a ladder extending from the upper end of the supporting-pieces to the ground, braces connecting the ends of the supporting-pieces to the ladder, and terminating in handles, hounds, and a tongue uniting the axle to the ladder, substantially in the manner and for the purpose specified.

2. The combination With Wheels and an axle, of supporting-pieces and cross-pieces firmly secured to the axle, braces connected to the axle, a ladder detachably secured to the supporting-pieces at their upper ends, said ladder being pivotally connected near its lower end to the braces, and means 20 for sustaining the ends of the ladder approximately in line with the braces, when the parts are closed or folded together, substantially in the manner and for the purpose specified.

3. The combination with Wheels and an axle, of supporting-pieces and cross-pieces secured at one end to the axle, a ladder detachably securable to the other end of the supporting-pieces, braces pivotally uniting the supporting-pieces to the ladder and terminating in handles, a tongue and hounds pivotally united to the axle, and means for uniting the tongue to the ladder, substantially as and for the purpose specified.

4. The combination with Wheels and an axle, of uprights and cross-pieces secured at one end to the axle, a ladder detachably securable to the other end of the uprights, braces pivotally uniting the uprights and the ladder, and a supporting-ledge upon the axle for supporting the ladder in the closed position, substantially as and for the purpose specified.

In testimony of all which I have hereunto subscribed my name.

HENRY W. KRYDER.

\Vitnesses:

MAE DEVLING, T. M. STEVENSON. 

